Best available copy



BEST AVAILABLE COP":

F. F. DORSEY.

IGNITION AFPARAIU S. APPLICATION FILED 0CT.5. AIQII.

1 ,3 1 7, 357. A la tentcdSept. 30, 1919.

3 SHEEIS-SNEET I.

II xrnvcenfmvr I BEST AVAILABLE COP;

F. F. DDRSEY.

' IGNHION APPARATUS.

. APPLICATbJ-i FILED OCT. 5. I917.

1 ,3 1 7,357. .lutenlcdfivpt. 3U, 191$).

Fig.

BEST AVAlLABLE COPY I F. F. DORSIEY'.

lcrmlou APPARATUS.

APPLICATION FILED OCT-5| I91].

[,3 1 7,357- Patented Sept. 30, 191%).

3 SHEUS-SHEH 3.

BEST AVAILABLE cor. UNITED STATES PATENT QFFECE.

FABNUM I. DO BSEY, OF ROCHESTER, NEW YORK, ASSIGNOR TO NORM EAST ELECTRIC COMPANY, OF ROCHESTER, NEW YQRK, A COB-POBATION OF NEW YORK.

IGNITION APPARATUS.

1,317,357. I lpccmcationoiletters Patent. P t t d S t 39 1913.

Application fled October 5, 1917. Serial No. 194,969. 7

To allwlwmitmay concern: circiiit-controller and the casing in which it Be it known that I, Fannmr F. DORSET,

. a citizen of the United States, residing at Rochester, in the county of Monroe and State of New York, have invented certain new and useful Improvements in Ignition Apparatus; and I do hereby declare the following to be a full, clear, and exact descrip- .tion of the invention such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to electric ignitionapparatus for use with internal-combustion engines, and. particularly to apparatus of the type in which the flow of current- -through an induction-coil is controlled by, a

rotary cirmit-mntroller actuated by connection with the engine. 3 Q

One object of the invention is to render more simple and directthe electric.connections between various parts of the apparatus. Another object of the invention is to render the apparatus compact and simple in construction, and particularly to bring together the induction-coil and the circuit-controller in such a manner as to shorten the connections between these parts, and preferably to eliminate exposed connections between thein. Another object of the invention is to roduce'anarrangement such that various inding-po'sts, throughwhich the circuitcontroller or controllers and the induction- 'coil are connected with a source of current is a front-elevation of ignition-apparatus" embodying the present invention and Fig. 2 is a side-elevation of the same; Fig. 3 is a side-elevation, in section on the line 3-3 in Fig. 1, but on a larger scale than the latter figure. Fig. 4 is a bottom plan-view of the body of insulating-material forming the cover of the circuit-controllers, together with the metal parts embedded in and sup ported by the cover; and Fig. 5 is a partial plan-view, showing particularly the primary "circuit-controller, is converted to high-tension current in an induction-coil, and the high-tension discharges are distributed amonga plurality of spark-plugs by a secondary circuit-controller or 'clistributer.

Referring particularly to Figs. 1 and 2,

which show its external appearance, the apparatus is inclosed by an integral casing which comprises a part 10, in which an autornati'c advancing-mechanism (not shown) is inclosed; a part 11, which may be described as a gear-housing, and which partly incloses the gearing through which the circuit-controllers are driven; and a part 12, which inclo'ses the circuit-controllers. Directly aboye the part 12 is a separate housing 1.3, which incloses the induction-coil, and between the parts 12 and 13is interposed a body 14 of insulating material, which constitutes a cover for the circuit-controllers and also a supporti for all of the binding-posts by which the circuit-controllers and the induction-coil are connected with other parts of the electrical apparatus. The circuit-controllers are actuatedby a vertical shaft 15, which turns in a bearingsleeve 16 fixed in the gear-housing 11, as shown in Fig. 3. This shaft is'turned by helical gears 17 and 19, through which it is connected with a horizontal drive-shaft 18.

This drive-shaft is connected with the engine by means of a suitable coupling 62 (Fig. 2). An automatic advancing-mechanism, incloscd in the part 10 in the casing, may be interposed in the connections just described, but as it forms no part of the present invention its construction is not illustrated.

The primary circnit-controller is actuated by a cam 20 fixed on the upper end of the 100 shaft 15. This cam engages a contact-lever 21 which cooperates with a fixed contact 22 in the usual manner, and thus periodically opens and closes the primary circuit The secondary controller or distributor comprises an arm 23, of insulating-material, fixed to the top of the cam 20 so as to rotate therewith. This arm carries a contact-memher 2': which cotipcratcsz'with a series of stationary contact-members 25-, these stationary wntnctuncnibers being embedded in the substance-of the cover l-t. The cover is provided with a. track-way 26 of suitable materiBL ugainSt which the contact-member 2-} slides in its revolution.

Thesecondary contact-members are connected, respectively, by conductors 27, with four binding-posts '28 mounted on the cover '14, the conductors 27 being embedded in the imiteriu-l of the cover and thus thoroughly insulated. Insulated wires may connect the hindingq'iosts 28 to the spark-plugs in the usual manner, the wires being fixed to the binding posts by cap-nuts 30.

'- The secondary discharges are conducted to the contact-member through a resilient comluc-tm' 31, which presses upwardly against a'contact-stud fixed in the middle of the cover 14. This mntnct-stiul is connected with the secondary winding of the induction-coil, as will be described.

The induction-coil is shown in Fig. 3. Although it maybe of any desired form of con- 1 etruction, it is here-in shown as of a peculiar form which, while notclaimed as a part of the present invention, is particularly adapted, by reason of its compactness, for use. in carrying out the present invention. This coil has a short straight core 33. of which theends are connected by an endless yoke 34 of suitable magnetic material, thus providing a substantially closed magnetic circuit. Within the yoke and surrounding the core 33 are the usual primary and secondary windings.

The induction-coil is iriclosod, as aforesaid, by a housing 13,.andpwing the ab sence of stray magnetism in a coil of the type in question, this casin may be of metal. The coil is secured in the rousing b a rod 36 which passes axially through the core and the yoke of the coil. One end of this rod looselyengages an opening'in a wall of the housing. The other end of the rod:

is prm idedswith a screw-threaded head 37,

which screws into an opening in the opposite wall of the housing and bears, against a washer 38 resting against the yoke.

The cover 14, inaddition to supporting so the semndary binding-posts; carries alsothe binding-posts by which'the primary current is brought to the circuit-controller and the coil. These binding-posts, 39 and 40, are embedded in the substance of the cover, and the post 39 is connected, by a conductor embedded in the cover; with atubular sleeve -22 which is also embedded in the cover. The cover is provided with a portion 63 which depends-within the casing-member 12 for a, suiiici'ent'dist-unce to afford a firm support for the sleeve 42, and also to insulate the high-tens1on cqntactmembers eflectively,

from the metal walls of the casing,

The sleeve 42 c0operates withu connect- 55 in2-nlug 43, which fixed within the cuswith a plate 47, which is fixed to but insu-' lated from the casing, and this plate supports a second upwardly projecting contactplug 48, which cooperates with a sleeve 49 fixed in the depending portion 63 of the cover 14. The sleeve 49 is provided, at its upper end, with a. binding-scrmv 50 by which it is connected with oneflof the primary terminals 51 of the lRdUCiZLm-COll. The other primary terminal is connected, by a binding-screw 52, with the binding-post 40;

Through the means just described the-circuit is completed through the primary cirwit-controller and the induction-coil,.so long. as the cover 14 IS in place. Whenever it is necessary to have access to the circuitcontrollers, for the purpose of cleaning or adjustment, the cover may be removed with out disconnecting any of the wins by which the circu t-controllers and the induction-coil are connected with other parts of the apparatus. When the cover is so removed the sleeves and the sprin -plugs are temporarily disengaged from other, but .upon re lacement'of the cover these parts are rought again into coo rative engagement.

One of the termina s of the secondary winding of i the induction-coil ma be grounded in the usual manner, an the other terminal 53' is connected directly with the-upper end of thecontact-stud 32. Owmg to' tlns arran ment of the parts it will be apparent that t a use of an external hightension conductor between the induction-coil and the secondary circuit-controller is ent11'61y avoided, and the connection between these parts is as short and simple as possible, thps rendering the apparatus rugged and avoidin the danger of loss of energy through iau ty insulation.

The primary circuit-controller is shown as provided with a condenser 54 mounted within the casing-member 12 and connected, 1n the usual manner, with the contact members. i

vThe coil-housing 13 is the cover 14 so that the relation of these parts is not disturbed when the coveris removed, the coil, casing and cover being always handled as a unit. For this purpose the housin 13 18 provided with do ending lugs 55 which are fixed to the cover y screws 56. Inorder to secure the cover place on the casing 12 two Efastening-dvices are employed, which are readily disengageable to ermit removal of the cover. The case 12 1s provided with lugs 57 between which bowed spring-members 58 are pivoted. To the upper end of each member 58 a cam-lever -59 is pivoted, these members cooperating,-

' particular forms of circuit-controllers and induction-coil illustrated and hereinbefore described, and in general the invention is not limited I to the illustrated embodiment thereof, but may be embodied in various other forms within the scope of the following claims. i

The invention' claimed is:

1. Ignition-apparatus comprising: a castion-coil and secured to the cover; and connecting means passing through the cover and connecting the induction coil with the circuit-controlling means.

2. Ignition-apparatus comprising: 2. casing; primary and secondary circuit-controllers inclosed therein; an'integral. cover; of insulating material, removably mounted on and closing said casing; an induction-coil mounted on the outer surface of said cover; a housing covering the induction-coil and secured to the cover; and connectingmeans passing through the cover and connecting the primary and secondary windings of the coil with the circuit-controllers without externally-exposed conductors. I

3. Ignition-apparatus, as in claim 1, comprising primary binding-postsmounted on said cover, and s] ip-connections, between said binding-posts and the primary circuit-controlling means, engageable and disengageable automatically when the cover is placed and removed.

4. Ignition-apparatus, as in claim 1, in which said cover has a bodyin the form of a, substantially flat plate of insulating material with binding-posts for external connections mounted in its exposed surfaces or edges.

5'. Ignition-apparatus, as inclaim 1, comprising disengageable fastening-devices directly connecting said casing and said hous ing; and independent fastening-devices for securing the housing on said cover.

FABNUM F. DORSEY. 

